Jimmy proof guard for door

ABSTRACT

A jimmy proof guard for a door in a door jam employs mating female and male members secured to jam and door respectively. The female member is an elongated bracket defining in cross section the shape of an L with longitudinally spaced slots extending transversely through both surfaces defining the L, these slots extending to the outer edge of one of these surfaces. The male member is elongated and flat with longitudinally spaced elements extending thereacross and engagable with corresponding slots. Each element in cross section defines a portion of a flat circular disc.

United States Patent 1 Grinbaum et al.

1 JIlMMY PROOF GUARD FOR DOOR [76] Inventors: Aron Grinbaum; Solomon .lakubowicz, both of 8 Sultana Ave., Toronto, Ontario, Canada [22] Filed: Mar. 25, 1974 [21] Appl. No.: 454,774

[52] 11.8. C1. 292/346 [51] Int. Cl? E05C 19/00 [58] Field of Search 292/346, 340; 70/416, 418

[56] References Cited UNITED STATES PATENTS 1,373,678 4/1921 Siemer 292/346 X 1,814,961 7/1931 Phillips 292/346 2,484,024 10/1949 Garberding 292/346 1 July 22,1975

3,592,498 7/1971 Raccuglia, Sr 292/346 Primary Examiner-Richard E. Moore [57] ABSTRACT A jimmy proof guard for a door in a door jam employs mating female and male members secured to jam and door respectively. The female member is an elongated bracket defining in cross section the shape of an L with longitudinally spaced slots extending transversely through both surfaces defining the L. these slots extending to the outer edge of one of these surfaces. The male member is elongated and flat with longitudinally spaced elements extending thereacross and engagable with corresponding slots. Each element in cross section defines a portion of a flat circular disc.

3 Claims, 5 Drawing Figures PATENTEDJUL22 ms w 885 834 lbA \4 F! 6. 5.

JIMMY PROOF GUARD FOR DOOR SUMMARY OF THE INVENTION This invention is directed toward a guard for a door which enables the lock to be protected from jimmying action. To this end a female member is secured to the jam of the door and a male member is secured to the door. These members are engaged when the door is closed and form an impenetrable barrier which protects the lock.

The female member defines a cross section the shape of an L and has spaced L shaped slots which extend through both surfaces of this member.

The male member is flat and elongated and has spaced elongated elements each of which detachably engages a corresponding slot to protect the lock.

BRIEF DESCRIPTION OF THE DRAWINGS In the drawings:

FIG. I is a perspective view of the female member used in the invention;

FIG. 2 is a side view of the male member used in the invention;

FIG. 3 is a plan view of the male member of FIG. 2;

FIG. 4 is a cross section taken along the line 4--4 in FIG. 2; and

FIG. 5 is a detail cross section showing the invention in use.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS Referring now to FIGS. l 5, a door fits into shoulder 14 of frame 12. The shoulder includes two adjacent vertical surfaces disposed at right angles and defining. with the vertical edge forming the line of intersection, an outside corner.

These surfaces in the region of door latch are mortised to receive as a flush mount female member 16. This member is an elongated bracket defining in cross section an L with spaced slots 24 extending transvcrsely across both bracket sections 16A and 16B which are disposed at right angles to each other. Screws 20 extend through holes 18 in both sections to hold the bracket vertically in place. The slots communicate with the outer edge of section 16A.

A side surface 22 of the door abuts section 16A when the door is closed. A portion of surface 22 is mortised out to receive in flush mount male member 26. Member 26 is disposed vertically with a flat bottom surface disposed in surface 24 and is held in place by screws extending through holes 30. Member 26 has spaced horizontal elements 32 which are aligned with the slots and slidably engage same when the door is closed and block access to the lock 34 whereby the arrangement is jimmy proof.

Each element 32 in horizontal cross section defines a portion of a flat circular disc whereby jimmying objects such as screwdrivers merely glide over the circular circumference of the elements and cannot be forced between door and frame.

While I have described my invention with particular reference to the drawings, such is not to be considered as limiting its actual scope.

Having thus described this invention, what is asserted as new is:

1. A jimmy proof guard for a door in a door frame, said guard comprising:

a female member adapted to be secured in a flush manner to a portion of an exposed vertical edge of the frame and to the associated exposed vertical flat surfaces extending at right angles to each other to define the edge, said female member being vertically elongated, defining in horizontal cross section a right angle and containing a plurality of vertically spaced L shaped slots which extend horizontally across both of said surfaces and communicate with a vertical exposed side edge on one selected surface; and

a male member adapted to be secured in a flush manner to a portion of an exposed vertical surface of the door which is swung into and out of abutting relationship with the selected surface of the frame. said male member having vertically spaced horizontal members each detachably engagable with a corresponding portion of a corresponding slot.

2. The guard of claim 1 wherein said members in horizontal cross section have outer peripheries which de fine circular arcs.

3. The guard of claim 2 wherein said members in horizontal cross section define segments of circular discs. l= l 

1. A jimmy proof guard for a door in a door frame, said guard comprising: A FEMALE MEMBER ADAPTED TO BE SECURED IN A FLUSH MANNER TO A PORTION OF AN EXPOSED VERTICAL EDGE OF THE FRAME AND TO THE ASSOCIATED EXPOSED VERTICAL FLAT SURFACES EXTENDING AT RIGHT ANGLES TO EACH OTHER TO DEFINE THE EDGE, SAID FEMALE MEMBER BEING VERTICALLY ELONGATED, DEFINING IN HORIZONTAL CROSS SECTION A RIGHT ANGLE AND CONTAINING A PLURALITY OF VERTICALLY SPACED L shaped slots which extend horizontally across both of said surfaces and communicate with a vertical exposed side edge on one selected surface; and a male member adapted to be secured in a flush manner to a portion of an exposed vertical surface of the door which is swung into and out of abutting relationship with the selected surface of the frame, said male member having vertically spaced horizontal members each detachably engagable with a corresponding portion of a corresponding slot.
 2. The guard of claim 1 wherein said members in horizontal cross section have outer peripheries which define circular arcs.
 3. The guard of claim 2 wherein said members in horizontal cross section define segments of circular discs. 